Michael Isikoff and David Corn explore the relationship between Trump and Putin, interference in the 2016 presidential election, the claims in the infamous Trump dossier, and more in their new book "Russian Roulette." watch

After Republicans unilaterally decided to end the House Intel Committee Russia investigation, Democrats detail more than 30 key witnesses who were not interviewed - along with unanswered questions and new revelations. watch

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Each night on the Emmy Award-winning 'All In', Chris Hayes partakes in lively conversations and debates with his guests. Hayes covers not only the biggest news stories of the day, but also the issues that are personally important to him including social justice and the environment.